Electric motor.



No. 667,275. Patented Feb! 5, l90l G. E. WEISENBURGER.

ELECTRIC MOTOR.

(Applicltion filed Feb. 21, 1900.) (Io llpdol.) 2 Shoots-8hoet H III 0Ji l o l WITNESSES INVENTUH I -ar rm: noun mans co; moroumcu wumnuron.o. c

No. 667,275. Patent od Fab. 5, 19m.

G. E. WEISENBURGER.

ELECTRIC MOTOR. (Applicntion' mod Feb. 21, 1900. 0 M 2 Sheen-Shoat 2.

WITNESSES L IN VE N TOH UNITED STATES PATENT OFFICE.

GEORGE E. WEISENBURGER, OF SHARON, PENNSYLVANIA, ASSIGNOR OF ONE-THIRDTO E. W. BEADEL, OF NEW CASTLE, PENNSYLVANIA.

ELECTRIC MOTOR.

SPECIFICATION forming part of Letters Patent No. 667,275, dated February5, 1901.

I Application filed February 21, 1900. Serial No. 6,010. (No model.)

T0 o whom it potty concern:

Be it known that I, GEORGE E. WEISEN- BURGER, a citizen of the UnitedStates, and a resident of Sharon, county of Mercer, and State ofPennsylvania, have invented a new and useful Improvement in ElectricMotors, of which the following is a specification, the principle of theinvention being herein explained and the best mode in which I havecontemplated applying that principle, so as to distinguish it from otherinventions.

My invention relates to electrical devices for use in the transmissionof power; and it consists of means hereinafter fully described.

The annexed drawings and the following description set forth in detailcertain mechanism embodying the invention, such disclosed meansconstituting but one of various mechanical forms in which the principleof the invention may be used.

In said annexed drawings, Figure I represents a plan view of therunning-gear of an autovehicle to which my invention may be applied.Fig. II represents a plan view of said invention, illustrating itsapplication to the transmission of power to a line-shaft. Fig. IIIrepresents an axial section of the field, its bearings, and attachedparts of the motor forming part of my invention. Fig. IV represents aplan view of said motor and intermediate gear of said antovehicle; andFig. V represents a side elevation of same, taken in the directionindicated by the arrow in Fig. IV.

The field-magnet A is provided at each end with a frame a and a,respectively, each of which is formed with a centrally-located hearing aand a respectively, for the two journals of the shaft bof an armature B,as shown in Fig. III. The portion of frame a. which forms the bearing ais extended axially with reference to same to form a trunnion (1 whichis journaled in and projects beyond a fixed bearing 0. That portion ofthe shaft 1) supported by hearing a is extended and is mounted in andprojects beyond a second bearing To the projecting ends of the trunniona and the shaft 1) are respectively keyed pinions D and D.

Upon the outer surface of and insulated from the portion of the framect, which forms bearing a are secured two collector-rings e e, each ofwhich is contacted by one of two brushesff, secured to a support 0,formed integral with or which may be secured to the fixed bearing G. Ina similar manner two lated from that portion of frame a which forms thebearing of, two brushes h h respectively contacting said rings and seenred toa support 0, formed integral with or secured to the fixed bearingOK.

Secured to the inside of the frame a are two brushes jj, which contactthe comm utator B, secured to the arn1ature-shaft.

The field-terminals are respectively connected with one ofthe twocollector-rings e e, the rings 9 g each being connected with the one ofthe two brushesjj. Brushes ff and h h are respectively connected withterminals in separate electrical circuits. It is thus seen that thefield and armature are each rotatable and that each may be wound so asto cause them to rotate in opposite directions by supplying propercurrent in the respective circuits. Current being supplied under suchconditions, such opposite rotation results, the field carrying with itthe brushesjj.

When the motor constructed as above described is utilized to driveshafting, the pinions D and D are replaced by pulleys D and D Fig. II,and one of the belts is crossed in order to obtain the same direction ofrotation from the oppositely-rotating armature and field. In the case ofits application to a vehicle an idler-pinion D Figs. IV and V, isutilized to obtain such direction of rotation.

applicable for use where it is advantageous to be able to obtain a lowerspeed than it is possible to obtain with the ordinary motor, such lowerspeed being capable of being had from my motor where it is impossible toobtain same from an ordinary motor of the same capacity and winding.

In vehicles it is an important feature to have the motor connected sothat in turning a curve the drivingwheel moving upon the greater are mayrotate at a higher speed than the other. This result is usually efiectedby the use of a compensating gear when a single motor is used or byusing two independent collector-rings g g are secured to and insu-' Theabove-described motor is particularly motors each connected with onedrivingwheel independently of the other. The use of compensating gearand double motor may be dispensed with in vehicles to which my device isapplied, inasmuch as the armature maybe connected with one driving-wheeland the field connected to the other,the two wheels being independent ofeach other. There being no positive connection between armature andfield, the two driving-wheels may hence rotate at different speeds. Thesame power may also be obtained from my motor at onehalf the speedrequired of the ordinary motor having the same winding, but havingeither field or armature fixed, thus reducing the loss by friction andthe objectionable features resulting from vibration.

Other modes of applying the principle of myinvention may be employedinstead of the one explained, change being made as regards the mechanismherein disclosed, provided the means covered by any one of the followingclaims be employed.

I therefore particularly point out and distinctly claim as myinvention 1. In an electric motor, a rotatable armature and its shaft, arotatable field-magnet, having removable end casings, said casings beingpivotally mounted on said armatureshaft, one of said casings forming asubstantially closed chamber, collector-rings mounted on said casingsand. having movement mounted on said shaft, one of said casings forminga socket for one end of said shaft, the opposite end casing forming aclosed commutator-chamber, a series of collector-rings mounted 011 saidend casings and movable therewith, said rings being in series, eachseries being on opposite sides of the field-magnet, and stationarybrush-supports for the collector-ring brushes, said supports formingclosed chambers for the collector-rings and their brushes, substantiallyas described.

Signed by me this 17th day of February, 1900.

GEORGE E. WEISENBURGER.

Attest:

A. W. CHASE, W. B. HULL.

